using Godot;

public class IfNode : ProgramNode
{
	public Item selectedItem;
	public int amount;
	public string comparator;
	public IfNode()
	{
		DisplayText = "If";
	}
	public override NodeResult Execute(Robot robot, double delta)
	{
		if (selectedItem == null)
		{
			lastExecutionMessage = "No Item selected";
			return NodeResult.FAILURE;
		}

		bool isConditionFulfilled = DetermineCondition();
		return isConditionFulfilled? NodeResult.SUCCESS : NodeResult.CONDITIONFALSE;
	}

	private bool DetermineCondition()
	{
		int inventoryAmount = GameData.inventory.GetItemAmount(selectedItem.data.Id);
		switch (comparator)
		{
			case "is bigger than":
				return inventoryAmount > amount;
			case "is less than":
				return inventoryAmount < amount;
			case "is not":
				return inventoryAmount != amount;
			case "is less than or equal to":
				return inventoryAmount <= amount;
			case "is bigger than or equal to":
				return inventoryAmount >= amount;
			default:
				return inventoryAmount == amount;
		}
	}

	public override void ReadParameters(NodeDisplay display)
	{
		HBoxContainer valueContainer = display.GetNode<HBoxContainer>("./EditorDisplay/HBoxContainer/");
		OptionButton items = valueContainer.GetNode<OptionButton>("./Item");
		string readableItem = items.GetItemText(items.GetSelectedId()).Split(":")[0];
		if (GameData.availableItems.ContainsKey(ItemData.GetIndex(readableItem)))
		{
			selectedItem = new Item { data = GameData.availableItems[ItemData.GetIndex(readableItem)] };
		}
		amount = (int)valueContainer.GetNode<SpinBox>("./Amount").Value;
		
		OptionButton comparators = valueContainer.GetNode<OptionButton>("./Comparator");
		comparator = comparators.GetItemText(comparators.GetSelectedId());
	}

	public override ProgramNode Duplicate()
	{
		IfNode duplicate = new IfNode()
		{
			selectedItem = selectedItem,
			amount = amount,
			comparator = comparator
		};
		return duplicate;
	}

	public override void Setup(NodeDisplay display)
	{
		OptionButton options = display.GetNode<OptionButton>("./EditorDisplay/HBoxContainer/Item");
		options.AddItem("Select item...");
		foreach (ItemData item in GameData.availableItems.Values)
		{
			if (GameData.availableResearch[item.Research].state != ResearchState.RESEARCHED) continue;
			options.AddItem(item.GetReadableName());
		}

		if (selectedItem != null)
		{
			for (int i = 0; i < options.ItemCount; i++)
			{
				if (ItemData.GetIndex(options.GetItemText(i).Split(":")[0]) == selectedItem.data.Id)
				{
					options.Select(i);
					break;
				}
			}
		}

		OptionButton comparators = display.GetNode<OptionButton>("./EditorDisplay/HBoxContainer/Comparator");

		if (comparator != null)
		{
			for (int i = 0; i < comparators.ItemCount; i++)
			{
				if (comparators.GetItemText(i) == comparator)
				{
					comparators.Select(i);
					break;
				}
			}
		}
	}

	public override string Save()
	{
		return $"Name: {DisplayText}, Item: {(selectedItem == null ? "Empty" : selectedItem.data.Id)}, Comparator: {comparator}, Amount: {amount}";
	}
}